Pith Number

pith:ZI6DBK5D

pith:2019:ZI6DBK5DBRQW6YYOCUUQIJJD3U

not attested not anchored not stored refs pending

2-Segal objects and algebras in spans

Walker H. Stern

arxiv:1905.06671 v1 · 2019-05-16 · math.AT · math.CT

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ZI6DBK5DBRQW6YYOCUUQIJJD3U}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Cited by

1 paper in Pith

Squares K-theory and 2-Segal spaces

Receipt and verification

First computed	2026-05-17T23:46:01.443388Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ca3c30aba30c616f630e1529042523dd12ac94a99c4ecdbff0b4a00ed942f77c

Aliases

arxiv: 1905.06671 · arxiv_version: 1905.06671v1 · doi: 10.48550/arxiv.1905.06671 · pith_short_12: ZI6DBK5DBRQW · pith_short_16: ZI6DBK5DBRQW6YYO · pith_short_8: ZI6DBK5D

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/ZI6DBK5DBRQW6YYOCUUQIJJD3U \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: ca3c30aba30c616f630e1529042523dd12ac94a99c4ecdbff0b4a00ed942f77c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c06607ca12e0c445af5c94e3dff3841effea43b66260a516b21467cb18887b86",
    "cross_cats_sorted": [
      "math.CT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AT",
    "submitted_at": "2019-05-16T11:46:38Z",
    "title_canon_sha256": "0c62180e4bfe000304c77440726d99acb4df2e79bb95b32f5968c14b501149cb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1905.06671",
    "kind": "arxiv",
    "version": 1
  }
}